Data Centre evaporative cooling

Friday 1st March 2013
Computer Room Evaporative Cooling

A new technique pioneered by EcoCooling with its patented Computer Room Evaporative Cooling (CREC ) units, has been demonstrated to free-up space for an additional 200 revenue-generating racks in a typical 1000 rack large data centre, cutting energy requirement for cooling from over 1,700kW to 160kW.

Described by Amazon’s James Hamilton (left) as “using the building as an air-handler” when combined with the CREC units, EcoCooling MD and technical director  (right) Alan Beresford added  “With increasing demand for co-location rack space many operators have run out of space. 

"The EcoCooling CREC cooling system can create an additional 20% of rack capacity compared with either perimeter CRACs or in-row cooling, because is installed external to the white space”, he  said 

As each co-location rack can generate potential revenue in excess of £1000 per month, this extra capacity has real significance. Around 200 extra racks in a 1000 rack data centre could generate over £2 million additional annual revenue. At the same time, cutting the cooling energy bill by over 10,000,000 kWh could mean in the region of £1million cost saving per year. “And that’s on top of significantly lower capital costs of EcoCoolers compared to standard refrigeration equipment,” said Beresford.
These are not merely theoretical calculations, Beresford explains, "with over 150 data centres now using the EcoCooling CREC evaporative cooling system, figures above are based on real installations.

“At one such site, the combination of evaporative cooling and the ‘building as an air-handler’ design technique meant that the rack complement on each of that data centre’s four floors is increased from 150 to 180 with the EcoCooling strategy. Over four floors that will add an extra 120 revenue earning racks when the build out is complete.”

A realistic engineer, Beresford points out “Evaporative cooling, such as used by our own EcoCoolers is a relatively young technology and is not suitable to every data centre in every country.” He points out however, that evaporative cooling has now come of age and can be used by many data centres throughout the temperate regions of the world.

“Considering the potentially massive increases in revenue and reductions in operating costs possible, data centre operators would be short-sighted not to include evaporative cooling in their due diligence at the planning stage.” he said.


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